[ZODB-Dev] revising layout of ZODB3 checkout

[Jeremy Hylton]

Several people have had problems with the current layout of source code
within a ZODB3 checkout and, hence, a source distribution.  The problem
is the top-level directories that contain packages with cExtensions
(like persistent).  If you build using setup.py build and run the tests,
all the compiled C extensions are in the build directory.  If you then
run python from the same directory and type "import ZODB," it will fail
because it picks up the uncompiled source directory.

I think we can fix this by moving all the source code to a top-level src
directory.  As a result, a checkout would only have two top-level
directories Doc and src.  It would also have setup.py, test.py, and a
few other files.

This change would not affect a Zope checkout at all.  I would just
re-arrange the repolinks for the ZODB3 CVS module.

The one downside is that it screws up current checkouts.  In most cases,
people would be best off getting a fresh checkout if the change is
made.  Would that be a problem?  Does anyone object?  I can probably do
this next week if it sounds like a good idea.

Jeremy